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Isolation of indole-3-acetic acid-producing Azospirillum brasilense from Vietnamese wet rice: Co-immobilization of isolate and microalgae as a sustainable biorefinery.
Pham, Thi-My; Bui, Xuan Dong; Trang, Le Vu Khanh; Le, Thi-Mai; Nguyen, Minh Ly; Trinh, Dang-Mau; Phuong, Nguyen Thi Dong; Khoo, Kuan Shiong; Chew, Kit Wayne; Show, Pau Loke.
Afiliação
  • Pham TM; The University of Danang, University of Science and Education, 459 Ton Duc Thang st., 550 000 Danang, Viet Nam.
  • Bui XD; The University of Danang, University of Science and Technology, 54 Nguyen Luong Bang st., 550 000 Danang, Viet Nam.
  • Trang LVK; The University of Danang, University of Science and Education, 459 Ton Duc Thang st., 550 000 Danang, Viet Nam.
  • Le TM; The University of Danang, University of Science and Education, 459 Ton Duc Thang st., 550 000 Danang, Viet Nam.
  • Nguyen ML; The University of Danang, University of Science and Education, 459 Ton Duc Thang st., 550 000 Danang, Viet Nam.
  • Trinh DM; The University of Danang, University of Science and Education, 459 Ton Duc Thang st., 550 000 Danang, Viet Nam.
  • Phuong NTD; The University of Danang, University of Technology and Education, 48 Cao Thang st., 550 000 Danang, Viet Nam. Electronic address: ntdphuong@ute.udn.vn.
  • Khoo KS; Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000 Cheras, Kuala Lumpur, Malaysia.
  • Chew KW; School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China. Electronic address: kitwayne.chew@xmu.edu.my.
  • Show PL; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500
J Biotechnol ; 349: 12-20, 2022 Apr 10.
Article em En | MEDLINE | ID: mdl-35331729
Production of indole-3-acetic acid (IAA) is well documented in various studies for the bacteria that inhabit the rhizosphere of plants, but with roots of wet rice, the outstandings have been not yet elucidated. This study began with the isolation of bacteria type strain Azospirillum sp. and developed the investigation to a screening of their ability in IAA production. This screening conducted a selection of only bacteria that was capable of the production of IAA with its content of over 25 µg. mL-1 for sequencing. Of 10 isolates only one resulted from the type strain Azospirillum brasilense (A. brasilense) with a similarity of 100%. Various factors that influence A. brasilense in biosynthesizing IAA such as temperature, pH, nitrogen presence and concentration of tryptophan in the culture medium were examined. The results indicated that the culture conditions were suitable for IAA biosynthesis at pH 6.5, 30 °C, culture media with nitrogen, and 0.1% trytophan. The next survey on the role of the immobilization of this bacteria with microalgae in alginate was highlighted to its support in microalgal growth. With the co-immobilization of bacteria and microalgae, the density of Chlorella vulgaris was significantly increased during 15-day culture, inducing 2.2 times of cell content in culture batch microalgae immobilized A. brasilense higher than that free-bacteria.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Oryza / Azospirillum brasilense / Chlorella vulgaris / Microalgas País/Região como assunto: America do sul / Asia / Brasil Idioma: En Revista: J Biotechnol Assunto da revista: BIOTECNOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Holanda
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Oryza / Azospirillum brasilense / Chlorella vulgaris / Microalgas País/Região como assunto: America do sul / Asia / Brasil Idioma: En Revista: J Biotechnol Assunto da revista: BIOTECNOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de publicação: Holanda